Answer

Function g called with -1
R 1 created 
R 2 created 
R 1 destroyed 
E caught
Function g called with 1
R 1 created 
R 2 created 
Function g called with 0
R 1 created 
R 2 created 
Function g called with -1
R 1 created 
R 2 created 
R 1 destroyed 
R 1 destroyed 
R 1 destroyed 
E2 caught 
Exception caught

Problem

#include < iostream.h >

class Resource {
	int x;
public:
	Resource (int y): x(y) 
	{ cout << "R " << x << " created " << endl; }
	~Resource ()
    { cout << "R " << x << " destroyed " << endl; }
};


class Error {
public:
	virtual void p () 
		{ cout << "E caught"<< endl; }
	};



class Error2 : public Error {
public:
	virtual void p () { cout << "E2 caught "<< endl; }
};


void g (int x) throw (Error, Error2);


void g (int x) {
	cout << "Function g called with " << x << endl;
	Resource r1(1);
	Resource* r2 = new Resource (2);
	if (x < 0 )
		throw Error2();
	else 
		g(x-1);
	delete r2;

}



void h () {
	try {
		g(-1);
    } catch (Error e) {
		e.p();
	}

	try {
		g(1);
	} catch (Error & e) {
		e.p();
		throw;
	}
}


void main() {
	try {
	    h();
	}
	catch ( ... ) {
		cout << "Exception caught" << endl;
	}
}